Boob-lockijstg mechastism



LF. K'ISSANE'AND. F. E. scHooNMAKER.

DOOR LOCKING MECHANISNI.'

` APPLICATION FILED APR- H Lgl.

'l ,3 6560. l Patented J une 10, 1919.

2 SHEETS-SHEET l.

attoznzw l. F. KISSANE AND F. E. SCHOONMAKER.

Dooa Looms MECH/mmm.

APPLICATION FILED APR. 11| 19l8. A 1,306,260, A Patent-ed June 10, 1919.

2 SHEETS-SHEET 2.

JOHN PGSSANE @y l fHNKEcHooNr/IAKEFL --hereinafter described and then Ational View of a car body,

JOHN F. KISSN'E AND FRANK E. SCHOON'MAKER, 0F DETRGIT, MICHIGAN.

DOOR-LOCKING MECHANISM.

Specication of Letters Patent.

Patented .time ro, rara.

Appltion filed April i1, 1918. Serial No. 228,011.

To all whom z't may concern Be it known that we, JOHNF. KIssANE and FRANK E. SCHOONMAKER, citizens of the United States of America, residing at Detroit, in the county -of Wayne and State of Michigan, have invented certain new and useful Improvements in Door-Locking Mechanism, of which the following is a specification, reference being had thereto to the accompanying drawings.

This invention relates to door locking mechanism, and more particularly to an automatic electric ,street car door interlocking device, which will prevent the motorman or operator of a street car from starting a car vwith any of the doors open.

he primary object of our invention is to.

,provlde an interlocking device of the above type which may be advantageously fusedl in connection with any type of street car or other vehicle Ahaving doors that may be opened and closed by the motorman er conductor of a street car, the device controlling the electric circuit in lconnection with the controllerof the street car thereby preventing the motorman from starting the car While doors are open, thus eliminating accidents due to passengers standing on doorsteps or attempting to enter or leave a oar.

A further object of our invention is to provide an electrically operated lock for a car door, which is controlled by a motorman of a car, thus .preventing a conductor, passengers or persons outside of the car from opening the door while the car is in motion.

The above and other objects are attained by a novel arrangement of parts that are claimed, and reference will now wherein A Figure l is a longitudinal horizontal secillustrating diagrammatically the electrical devices associvated with the' doors of thc car body and in circuit with the controller of the car;

F ig. 2 is a horizontal sectional view of a portion of a car, showing what isordinarily termed a rat-trap door, and

Fig. 3 is a perspective view of the same, showing an electric lock for the door.

In describing our invention by aid of the.

views above referred to, we desire to point out that the same are merely illustrative of vsuch changes as fall be had to the drawings,

' prises a solenoid 8, contiguous to a dwkrvvayV mechanisms. It is therefore to be understood that our invention is susceptible to within the scope of the ap ended claims. n the drawings, the reference numeral l denotes the body of a street car or other vehicle having doors 2 of'a rat-trap type,4 that is, each door is composed4 of two sec tions hinged together with one of the scctions hinged to the car body, so that when the door is opened, the sections thereof are swung into parallelism.

Associated with the doors 2 are door operating mechanisms 3, which may include rock shafts, cranks, toggle levers, reach rods, and such other members that will permit or the conductor or motorman of the car opening and closing the doors at a point remote therefrom.

Adjacent the door operating mechanism `we locate a stationary switch member 4 and we connect to some part of the door Qperating mechanism, a movable switch member 5 which'may be shifted by the door operating mechanism 3 to and from the stationary switch member 4. The switch members 4 and 5 may be in the form of a knife, lever or other form of switch that will open and close an electric circuit. Diagrammatically we have illustrated the switch as a lever switch with all of the switches connected by wires 6 to the controller. 7 of the car, so that the car cannot be set in motion by the mo torman until all of the switches are closed. This is only accomplished by having the doors closed, and if thedoors 2 are not completely closed, then the switches are open and there is broken circuit at the controller 7, that prevents operation of the car. 95 Adjacent each door is an electric locking device inrcircuit with the controller 7, so that while the car is in motion the doors cannot be opened. Each electric device comas shown in Figs. 2 and 3, and the coreof the solenoid is connected to a locking lever 9 having an end 10 adapted to engage in a keeper llin or on the upper edge of the door. rlhe lever 9 is fulcrumed or pivoted on a suitable bracket or bearing l2, carried by the car body, and the end of said lever is connected by a coiled retractile spring 13 to a bracket 14 carried by the car body. The retractilc force of the spring 13 is adapted to move the end of the lever 9 out of the keeper l1 when the solenoid 8 is denergized, such denergization taking place When the operating circuit of the car is broken at the controller 7.

l `rom the foregoing, it Will be observed phat it is necessary for the motorman of the street car to bring the car to a stop before the conductor or even the motorman can open the doors 2 of the car, since during the'ope'ration of the car the solenoids 8 are energized, thereby causing the levers 9 to lliold the doors 2 closed, against opening by either the conductor, motorman, passengers or persons outside of the car. After the car is brought to a standstill, the conductor ormotorman may open the doors 2 and in so doing break the electrical circuit through the controller 7 thus rendering it impossible for the Inotorman of the. car to start the same, until the doors are closed.

We believe that when the door operated' switches and locking devices are installed that the same will prevent many accidents incurred by passengers standing on door steps or attempting to enter or leave a car when the same is 1n motion.

Whatvwe claim is:

1. The combination with an electrically operated car having hinged doors, and a controller for the electric operating circuit of the car, of door locking devices incircuit with said controller and adapted to prevent openingof the car doors when the car is in' motion, each device comprising a solenoid adjacent the upper edge of each door, a pivoted lever havin one end thereof serving said solenoid, an a keeper in the upper edge, of each door adapted to receive the opposite and ,adapted tobreak said c ar operating circuit When said car doors areopen, and door locking devices at the upper edges of the doors and including solenoids in circuit With said controller and ladapted yto prevent opening of the car doors when the car is in motion. Y

In testimony whereof We affix oursignavtures in the presence of two witnesses.

JOHN F. KIssANE. FRANK E. vsoriooNMAiraR.

Witnesses:

ANNA M. Donn, KARL H. BUTLER. 

